【摘要】 目的:评价64层螺旋CT血管成像在冠状动脉病变中的应用价值。方法:对50例患者行64层MSCT冠状动脉造影检查,经肘前静脉注射对比剂,平静吸气后屏气进行扫描,采用回顾性心电门控技术,并将图像传送到工作站进行容积再现、多平面重建、曲面重建和最大密度投影进行图像后处理重建。其中全部患者有传统X线冠状动脉造影作对照。结果:50例冠状动脉造影显示的535节段冠状动脉(直径≥2 mm)图像中,64MSCT提供优良图像可供分析为515节段,可评估率为93.3%。与SCA对照分析,评价冠状动脉狭窄的敏感性、特异性、阳性预测值以及阴性预测值分别为88.41%、95.34%、75.31%和98.09%。对冠状动脉狭窄的检出准确率为83.75%。结论:64层MSCT是有效可靠的冠心病诊断工具,是冠状动脉疾病筛选和诊断中很有潜力的非侵袭性检查方法。更多还原

【Abstract】 Objective:To evaluate the value of 64-slice spiral computed tomography angiography(CTA) for the assessment ofcoronary artery disease.Methods:Fifty patients were performed 64-slice spiral CT in coronary artery intravenously contrast enhanced 64-slice spiral computed tomography Coronary angiography was achieved during a single breath hold,and ECG images were reconstructed retrospectively.All axial images were transferred to an external workstation.The reconstructed images were processed into volume rendering(VR) and multiplanner reconstruction(MPR) and curver planner reconstruction(CPR) and maximum intensity projection(MIP),The results of coronary reconstructions were compared with SCA to analyze the accuracy of coronary artery disease.Results:In the 535 segments of coronary artery of 50 patients 515 were judged to be evaluable by MSCT in detecting stenosis of coronary artery was 88.41%,95.34%,75.31%and 98. 09%.The accuracy rate of 64 MSCT in detecting stenosis of coronary arterywas 83.75%.Conclusion:64-slice MSCT coronary angiography is a reliable diagnostic method for coronary heart disease and promising technique for noninvasive screening and diagnosis of coronary disease.更多还原